typedef struct g723_adpcmwaveformat_tag {
        WAVEFORMATEX    wfx;
        WORD            cbExtraSize;
        WORD            nAuxBlockSize;
} G723_ADPCMWAVEFORMAT;

typedef G723_ADPCMWAVEFORMAT *PG723_ADPCMWAVEFORMAT;

typedef G723_ADPCMWAVEFORMAT NEAR *NPG723_ADPCMWAVEFORMAT;

typedef G723_ADPCMWAVEFORMAT FAR  *LPG723_ADPCMWAVEFORMAT;